Question at position 29 It acknowledges the request from the client and synchronizes the session.It closes the TCP session.It is the final stage of the negotiation sent by the client.It is the first packet sent by the host.Clear my selection

Question

BlackTom AI · Accepted Answer

In TCP session establishment, the initial step from the client is to send a SYN to indicate a request to start a connection, and the server responds with a SYN-ACK to both acknowledge the request and synchronize sequence numbers.
Option 1: 'It acknowledges the request from the client and synchronizes the session.' This aligns with the role of a SYN-ACK, which both acknowledges the client's SYN and provides its own initial sequence number to establish synchronization.
Option 2: 'It closes the TCP session.' Closing the session is performed later with a FIN or a RST, not during session initiation, so this is not the correct description of the first handshake message.
Option 3: 'It is the final stage of the negotiation sent by the client.' The final stage of the handshake from the client would be sending a final ACK after receiving the server's SYN-ACK, not the initial response itself; moreover this option implies client-initiated completion rather than server response.
Option 4: 'It is the first packet sent by the host.' The first packet sent by the host (server) would be a SYN-ACK in response to the client's SYN, but this option wording describes the action from the host as if it were the client’s initial action, which is inaccurate for the handshake sequence.

Question at position 29 It acknowledges the request from the client and synchronizes the session.It closes the TCP session.It is the final stage of the negotiation sent by the client.It is the first packet sent by the host.Clear my selection单项选择题

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